SpaceAtlas Space Object Data
NASA JPL SBDB · 437P

Lemmon-PANSTARRS

Lemmon-PANSTARRS follows a distinctly cometary orbit: an eccentricity of 0.252 carries it from 3.41 AU at perihelion out to 5.71 AU at aphelion.

comet Observations: 106
Orbital Period · P
9.74 yr
v(q)
18 km/s
v(Q)
10.8 km/s
TJ
2.95
Eccentricity · e
0.2523

Orbit and dynamics

Between its closest point (3.41 AU) and its farthest (5.71 AU), the heliocentric distance changes by 2.3 AU over every revolution.

One full revolution takes 9.74 yr (3,557 days), computed from the semi-major axis of 4.56 AU.

An eccentricity of 0.252 makes the orbit moderately elongated.

Its inclination of 3.69° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 18 km/s at perihelion and falls to 10.8 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = 2.95, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

Neither a measured diameter nor a reliable absolute magnitude is available for Lemmon-PANSTARRS, so its physical size remains unconstrained.

Observation record and orbit quality

Astrometry from 106 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3558 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
4.56 AU
Eccentricity
0.2523
Perihelion
3.41 AU
Aphelion
5.710488 AU
Inclination
3.69°
Orbital Period
— yr
Epoch
2458025.5
Mean Anomaly
179.13°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
—

Orbit Quality

RMS
0.35583
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

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